The Book of Mormon and First John

Alma 7:14
...who is mighty to save and to cleanse from all
unrighteousness.

I
John 2:15,16 Love not the world, neither the things that
are in the world...For all that is in the world, the lust
of the flesh, and the lust of the eyes, and the pride of
life, is not of the Father, but is of the world.

I Nephi 22:23
...and those who seek the lusts of the flesh and the
things of the world...Alma 39:9
...and go no more after the lusts of your eyes...

I
John 3:1-3 Behold, what manner of love the Father hath
bestowed upon us, that we should be called the sons of
God......but we know that, when he shall appear, we shall
be like him; for we shall see him as he is. And every man
that hath this hope in him purifieth himself, even as he
is pure.

Moroni 7:48
...that ye may be filled with this love, which he hath
bestowed upon all who are true followers of his Son,
Jesus Christ; that ye may become the sons of God; that
when he shall appear we shall be like him, for we shall
see him as he is; that we may have this hope; that we may
be purified even as he is pure...

I
John 5:7 For there are three that bear record in heaven,
the Father, the Word, and the Holy Ghost: and these three
are one.

II Nephi 31:21
...and the only and true doctrine of the Father, and of
the Son, and of the Holy Ghost, which is one God...III Nephi
11:27 ...the Father, and the Son, and the Holy
Ghost are one...III Nephi
11:36 ...for the Father, and I, and the Holy
Ghost are one. Mormon 7:7
...unto the Father, and unto the Son, and unto the Holy
Ghost, which are one God...

The word 'cleanse' (I John 1:9) is used only once in the Book
of Mormon.

I John 5:7 is generally considered to be a late interpolation
into the text. It is present in only a very few, late Greek
manuscripts.